家兎アキレス腱の白筋腱と赤筋腱の力学特性と加齢変化

概要

論文の詳細を見る
The mechanical properties of the white muscle (medial and lateralgastrocnemius muscles) and red muscle (soleus muscle) tendons ofthe rabbit Achilles tendon were determined by tensile tests. Thecross-sectional area of the lateral (LGT) gastrocnemius muscletendon was thicker than that of the medial (MGT) gastrocnemius andsoleus muscle (ST) tendons in both the 8-10-month-old (young) and 4-5-yr-old (old) groups. The range of tensile strength was 62.3-70.3 MPa in the young and 64.5-73.0 MPa in the old groups. There were no significant differences among the three types oftendons. The maximum load for LGT in both the young and the groupstended to be higher than that for the MGT or ST. Elongation atfailure, was significantly higher in the ST than in either the MGT or LGT in the young. The stress-strain curves, namely the tangentmodulus for ST tended to be higher than that for the MGT or LGT inboth groups. That is, the white muscle tendon was stiffer andless extensile than the red muscle tendon, the red muscle tendonbeing more highly extensile than the white muscle tendon. These findings suggest that the white muscle tendon has a higherelasticity than the red muscle tendon.
日本運動生理学会の論文
1994-11-30